I would like to know if anyone has info on jetting, clutching, and gearing for a Phazer mountain sled. I am building one for my son so he can ride with Dad out west. I have a 144" RMK rear suspension for it and a 1 1/4" predator track that I am going to be installing on it. Any info would be appreciated! If anyone has a Aaen "Can" pipe part #PIY 11055 I would be interested in it. I would even consider a Aaen "Torquer" pipe part #PIY 11060 if someone has one laying around.

This could be very interesting. Engine is stock I assume? Couple of things when you put a pipe on a phazer you need to know.

1.) Both Primary and Secondary jets need to go up. Aaen pipes were the better pipes in my opinon but the silencer always blew out of them. Stock jets were at 130 and 45 (I think but don't rely on that, I have a manual at my shop which I'll get). If I remember right mine had 142.5 and 52 in it. Again i'll look for the info for you.

2.) Clutching one was probably the easiest thing, Black Green spring I believe and the secondary in C-2. Again, wait cuz I should still have that book. I can't remember what weights though...memory again.

3.) Gearing will be the third thing you will want to look at. 13/43 comes to mind. I would see what is in it and gear down from there. Usually going up in teeth on the upper gear by "1" tooth.

5.) Air box and cold air intake are a must with that pipe too (in my opinion) get some fresh air to the engine.

The phazer was a fun sled in its day, I had an 84', 86', 89' 92' and then in 93 I bought an SX Exciter, long tracked it and had more fun.

I have a shelf of old parts if there is something you need, carbs, skis, pistons, some clutch parts, maybe a cold air intake.

It is a stock engine. Here is an answer that Snowdad on Totally Yamaha had given me after I stated I was interested in a set up for 8 to 10,000':

for what its worth:

stock gearing on the 136 models were 17/33(vs 17/29 on the shorties) if your going to regear, shoot for over 2:1 on the ratio like 16/33 or 16/35, if you can find them. your shooting for 3400-3500 engagement and 6800 shift out.

look for a white yellow white or yellow pink yellow spring(i may have some).
change out the steel rivet in the stock 89f weights with aluminum ones. if you have access, use the 14.5mm rollers. i need to dig out my chart for part numbers on the clutch parts and gears, if needed.

you will want to swap the nozzle and the main nozzle out as well along with a main jet change down to #125 or 130, depending on temps. 2 turns out on the air screw. i have pt numbers for the carb change parts if needed as well.

remember those little sleds loose alot at altitude(even the big sleds do) so be prepared to take any advantage of what they have to offer.

Thanks for checking. I am currently looking for an Aaen pipe for the Phazer. Give my son a little more zip out west. How do you like the PSI pipe? I appreciate any help that would lead to a good starting point for me.

Thanks to everyone for the info. To recap I am looking to gear to about a 2 to 1 ratio and I will try the clutching info given. I will be doing the conversion to the 144" soon. I'll try to post pictures of the progress. I also have an opportunity to purchase a 93 Exciter. Should I long track the Exciter instead because of the increased horsepower or should I stick to the Phazer because of the weight?